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22-Elec-A1 Circuits: May 2013

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Source voltage, Thevenin equivalent & maximum power
  2. Question 2 Node-voltage analysis
  3. Question 3 Mesh-current analysis
  4. Question 4 First-order RC switching transient
  5. Question 5 AC power and power-factor correction
  6. Question 6 Laplace-domain RLC response

Start with Question 1 →

Paper: National Examinations — 07-Elec-A1 Circuits, May 2013. Closed-book, 3-hour paper; a Laplace-transform table is supplied. Six questions (Q1 has two parts); any five of equal value constitute a complete paper. Full worked solutions to all six questions are given below.

Reference texts: C. K. Alexander & M. N. O. Sadiku, Fundamentals of Electric Circuits (7th ed., McGraw-Hill) — nodal/mesh analysis, Thevenin and maximum-power transfer, first-order transients, AC power and power-factor correction, Laplace-domain circuit analysis; W. H. Hayt, J. E. Kemmerly & S. M. Durbin, Engineering Circuit Analysis (9th ed.) — companion treatment of the s-domain and initial-condition models.

every network shown here was reconstructed element-by-element from the original drawing. Reference-node and source-polarity choices are stated with each solution so a reader can reproduce every sign.